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A novel circularly polarized microstrip rectenna operating on C-band with low proflle is proposed. The input and output match networks of the rectifying circuit are realized by ‚=4 microstrip lines and open stubs with the harmonics being inhibited. The circularly polarized receiving antenna is a truncated-corner square patch fed by microstrip line with DGS (Defect Ground Structure) for suppressing high order harmonics further. The voltage of 4.34V on the load of 298› is measured and the overall RF-DC conversion e-ciency of 68.4% is obtained. This kind of rectenna can be extended to large arrays for wireless power transmission applications.

A CIRCULARLY POLARIZED RECTENNA WITH LOW PROFILE FOR WIRELESS POWER TRANSMISSION